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Nipocalimab
Chemical compound From Wikipedia, the free encyclopedia
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Nipocalimab, sold under the brand name Imaavy, is a monoclonal antibody used for the treatment of generalized myasthenia gravis.[1] It is a neonatal Fc receptor blocker.[1] It is an high affinity, fully human, aglycosylated, effectorless immunoglobulin G (IgG) anti-FcRn monoclonal antibody.[2][3]
Nipocalimab was approved for medical use in the United States in April 2025.[4][5]
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Medical uses
Nipocalimab is indicated for the treatment of generalized myasthenia gravis in people aged twelve years of age and older who are anti-acetylcholine receptor or anti-muscle-specific tyrosine kinase antibody positive.[1]
History
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Nipocalimab was initially developed by Momenta Pharmaceuticals, Inc before it was acquired by Johnson & Johnson in August 2020.[2]
Nipocalimab has received rare pediatric disease designation from the U.S. Food and Drug Administration (FDA) for the prevention of hemolytic disease of the fetus and newborn.[6] Additionally, the FDA granted nipocalimab orphan drug designation in hemolytic disease of the fetus and newborn.[7][8] In 2019, nipocalimab received orphan medicinal product designation by the European Medicines Agency for the treatment of HDFN.[9]
In February 2024, nipocalimab was granted breakthrough therapy designation by the US Food and Drug Administration for the treatment of alloimmunized pregnant individuals at high risk of severe hemolytic disease of the fetus and newborn.[10][11][12]
In August 2024, Johnson & Johnson applied for FDA approval of nipocalimab for the treatment of people living with generalized myasthenia gravis (gMG). The application is based on data from the phase III Vivacity-MG3 study.[13][14]
In November 2024, nipocalimab was granted breakthrough therapy designation by the US Food and Drug Administration as a treatment for adults with moderate-to-severe Sjögren's disease. The decision was based on the results from the phase II DAHLIAS study evaluating the effects of nipocalimab in more than 160 adults with moderately-to-severely active primary Sjögren's disease.who were seropositive for anti-Ro60 and/or anti-Ro52 IgG antibodies.[15][16][17]
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Society and culture
Legal status
Nipocalimab was approved for medical use in the United States in April 2025.[1][5]
Names
Nipocalimab is the international nonproprietary name.[18]
Research
For hemolytic disease of the newborn, nipocalimab works by decreasing levels of alloantibodies and other circulating IgG antibodies in the mother without impacting immune function. FcRn inhibition is believed to prevent alloantibodies from entering the fetus, which can reduce the risk of hemolytic disease of the newborn.[19]
Clinical Trials
Nipocalimab is in clinical trials in the US
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References
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